If you are looking to buy a custom exterior door then it is worth considering approaching a blacksmith and asking them for a design and quote for a wrought iron grill. Grills make excellent exterior doors as they allow the air to circulate whilst providing the security of a solid door. They won’t suit every household, but where appropriate they provide an attractive feature to the complement your interior doors and let in almost 100% of the natural light. Most iron mongers and blacksmiths will be able to offer you a choice of existing and custom built doors to fit any frame size and once installed they will last a lifetime.